Robust Load Frequency Controller Design Based on a New Strict Model

摘要

This article presents an approach to design robust load frequency controllers. In view of the drawbacks of the conventional load frequency control model, a new strict model is derived from the detailed area model. Based on the derived model, the robust load frequency controllers are designed to restrain the disturbances. Since the robust controllers with high order are adverse to practical application, the balanced truncation method is adopted to reduce the order of the controllers. Finally, the designed controllers are tested on a typical two-area four-machine system, and the results verify the validity of the presented approach.